internal.h revision 259268 
1/* Part of CPP library.
2   Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3   Free Software Foundation, Inc.
4
5This program is free software; you can redistribute it and/or modify it
6under the terms of the GNU General Public License as published by the
7Free Software Foundation; either version 2, or (at your option) any
8later version.
9
10This program is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with this program; if not, write to the Free Software
17Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
18
19/* This header defines all the internal data structures and functions
20   that need to be visible across files.  It should not be used outside
21   cpplib.  */
22
23#ifndef LIBCPP_INTERNAL_H
24#define LIBCPP_INTERNAL_H
25
26#include "symtab.h"
27#include "cpp-id-data.h"
28
29#ifndef HAVE_ICONV_H
30#undef HAVE_ICONV
31#endif
32
33#if HAVE_ICONV
34#include <iconv.h>
35#else
36#define HAVE_ICONV 0
37typedef int iconv_t;  /* dummy */
38#endif
39
40struct directive;		/* Deliberately incomplete.  */
41struct pending_option;
42struct op;
43struct _cpp_strbuf;
44
45typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t,
46			   struct _cpp_strbuf *);
47struct cset_converter
48{
49  convert_f func;
50  iconv_t cd;
51};
52
53#define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t))
54
55/* Test if a sign is valid within a preprocessing number.  */
56#define VALID_SIGN(c, prevc) \
57  (((c) == '+' || (c) == '-') && \
58   ((prevc) == 'e' || (prevc) == 'E' \
59    || (((prevc) == 'p' || (prevc) == 'P') \
60        && CPP_OPTION (pfile, extended_numbers))))
61
62#define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
63#define CPP_BUFFER(PFILE) ((PFILE)->buffer)
64#define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base)
65#define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
66
67#define CPP_INCREMENT_LINE(PFILE, COLS_HINT) do { \
68    const struct line_maps *line_table = PFILE->line_table; \
69    const struct line_map *map = &line_table->maps[line_table->used-1]; \
70    unsigned int line = SOURCE_LINE (map, line_table->highest_line); \
71    linemap_line_start (PFILE->line_table, line + 1, COLS_HINT); \
72  } while (0)
73
74/* Maximum nesting of cpp_buffers.  We use a static limit, partly for
75   efficiency, and partly to limit runaway recursion.  */
76#define CPP_STACK_MAX 200
77
78/* Host alignment handling.  */
79struct dummy
80{
81  char c;
82  union
83  {
84    double d;
85    int *p;
86  } u;
87};
88
89#define DEFAULT_ALIGNMENT offsetof (struct dummy, u)
90#define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
91#define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT)
92
93#define _cpp_mark_macro_used(NODE) do {					\
94  if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN))	\
95    (NODE)->value.macro->used = 1; } while (0)
96
97/* A generic memory buffer, and operations on it.  */
98typedef struct _cpp_buff _cpp_buff;
99struct _cpp_buff
100{
101  struct _cpp_buff *next;
102  unsigned char *base, *cur, *limit;
103};
104
105extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t);
106extern void _cpp_release_buff (cpp_reader *, _cpp_buff *);
107extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t);
108extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t);
109extern void _cpp_free_buff (_cpp_buff *);
110extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t);
111extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t);
112
113#define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur)
114#define BUFF_FRONT(BUFF) ((BUFF)->cur)
115#define BUFF_LIMIT(BUFF) ((BUFF)->limit)
116
117/* #include types.  */
118enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
119
120union utoken
121{
122  const cpp_token *token;
123  const cpp_token **ptoken;
124};
125
126/* A "run" of tokens; part of a chain of runs.  */
127typedef struct tokenrun tokenrun;
128struct tokenrun
129{
130  tokenrun *next, *prev;
131  cpp_token *base, *limit;
132};
133
134/* Accessor macros for struct cpp_context.  */
135#define FIRST(c) ((c)->u.iso.first)
136#define LAST(c) ((c)->u.iso.last)
137#define CUR(c) ((c)->u.trad.cur)
138#define RLIMIT(c) ((c)->u.trad.rlimit)
139
140typedef struct cpp_context cpp_context;
141struct cpp_context
142{
143  /* Doubly-linked list.  */
144  cpp_context *next, *prev;
145
146  union
147  {
148    /* For ISO macro expansion.  Contexts other than the base context
149       are contiguous tokens.  e.g. macro expansions, expanded
150       argument tokens.  */
151    struct
152    {
153      union utoken first;
154      union utoken last;
155    } iso;
156
157    /* For traditional macro expansion.  */
158    struct
159    {
160      const unsigned char *cur;
161      const unsigned char *rlimit;
162    } trad;
163  } u;
164
165  /* If non-NULL, a buffer used for storage related to this context.
166     When the context is popped, the buffer is released.  */
167  _cpp_buff *buff;
168
169  /* For a macro context, the macro node, otherwise NULL.  */
170  cpp_hashnode *macro;
171
172  /* True if utoken element is token, else ptoken.  */
173  bool direct_p;
174};
175
176struct lexer_state
177{
178  /* Nonzero if first token on line is CPP_HASH.  */
179  unsigned char in_directive;
180
181  /* Nonzero if in a directive that will handle padding tokens itself.
182     #include needs this to avoid problems with computed include and
183     spacing between tokens.  */
184  unsigned char directive_wants_padding;
185
186  /* True if we are skipping a failed conditional group.  */
187  unsigned char skipping;
188
189  /* Nonzero if in a directive that takes angle-bracketed headers.  */
190  unsigned char angled_headers;
191
192  /* Nonzero if in a #if or #elif directive.  */
193  unsigned char in_expression;
194
195  /* Nonzero to save comments.  Turned off if discard_comments, and in
196     all directives apart from #define.  */
197  unsigned char save_comments;
198
199  /* Nonzero if lexing __VA_ARGS__ is valid.  */
200  unsigned char va_args_ok;
201
202  /* Nonzero if lexing poisoned identifiers is valid.  */
203  unsigned char poisoned_ok;
204
205  /* Nonzero to prevent macro expansion.  */
206  unsigned char prevent_expansion;
207
208  /* Nonzero when parsing arguments to a function-like macro.  */
209  unsigned char parsing_args;
210
211  /* Nonzero if prevent_expansion is true only because output is
212     being discarded.  */
213  unsigned char discarding_output;
214
215  /* Nonzero to skip evaluating part of an expression.  */
216  unsigned int skip_eval;
217
218  /* Nonzero when handling a deferred pragma.  */
219  unsigned char in_deferred_pragma;
220
221  /* Nonzero if the deferred pragma being handled allows macro expansion.  */
222  unsigned char pragma_allow_expansion;
223};
224
225/* Special nodes - identifiers with predefined significance.  */
226struct spec_nodes
227{
228  cpp_hashnode *n_defined;		/* defined operator */
229  cpp_hashnode *n_true;			/* C++ keyword true */
230  cpp_hashnode *n_false;		/* C++ keyword false */
231  cpp_hashnode *n__VA_ARGS__;		/* C99 vararg macros */
232};
233
234typedef struct _cpp_line_note _cpp_line_note;
235struct _cpp_line_note
236{
237  /* Location in the clean line the note refers to.  */
238  const unsigned char *pos;
239
240  /* Type of note.  The 9 'from' trigraph characters represent those
241     trigraphs, '\\' an escaped newline, ' ' an escaped newline with
242     intervening space, and anything else is invalid.  */
243  unsigned int type;
244};
245
246/* Represents the contents of a file cpplib has read in.  */
247struct cpp_buffer
248{
249  const unsigned char *cur;        /* Current location.  */
250  const unsigned char *line_base;  /* Start of current physical line.  */
251  const unsigned char *next_line;  /* Start of to-be-cleaned logical line.  */
252
253  const unsigned char *buf;        /* Entire character buffer.  */
254  const unsigned char *rlimit;     /* Writable byte at end of file.  */
255
256  _cpp_line_note *notes;           /* Array of notes.  */
257  unsigned int cur_note;           /* Next note to process.  */
258  unsigned int notes_used;         /* Number of notes.  */
259  unsigned int notes_cap;          /* Size of allocated array.  */
260
261  struct cpp_buffer *prev;
262
263  /* Pointer into the file table; non-NULL if this is a file buffer.
264     Used for include_next and to record control macros.  */
265  struct _cpp_file *file;
266
267  /* Saved value of __TIMESTAMP__ macro - date and time of last modification
268     of the assotiated file.  */
269  const unsigned char *timestamp;
270
271  /* Value of if_stack at start of this file.
272     Used to prohibit unmatched #endif (etc) in an include file.  */
273  struct if_stack *if_stack;
274
275  /* True if we need to get the next clean line.  */
276  bool need_line;
277
278  /* True if we have already warned about C++ comments in this file.
279     The warning happens only for C89 extended mode with -pedantic on,
280     or for -Wtraditional, and only once per file (otherwise it would
281     be far too noisy).  */
282  unsigned int warned_cplusplus_comments : 1;
283
284  /* True if we don't process trigraphs and escaped newlines.  True
285     for preprocessed input, command line directives, and _Pragma
286     buffers.  */
287  unsigned int from_stage3 : 1;
288
289  /* At EOF, a buffer is automatically popped.  If RETURN_AT_EOF is
290     true, a CPP_EOF token is then returned.  Otherwise, the next
291     token from the enclosing buffer is returned.  */
292  unsigned int return_at_eof : 1;
293
294  /* One for a system header, two for a C system header file that therefore
295     needs to be extern "C" protected in C++, and zero otherwise.  */
296  unsigned char sysp;
297
298  /* The directory of the this buffer's file.  Its NAME member is not
299     allocated, so we don't need to worry about freeing it.  */
300  struct cpp_dir dir;
301
302  /* Descriptor for converting from the input character set to the
303     source character set.  */
304  struct cset_converter input_cset_desc;
305};
306
307/* A cpp_reader encapsulates the "state" of a pre-processor run.
308   Applying cpp_get_token repeatedly yields a stream of pre-processor
309   tokens.  Usually, there is only one cpp_reader object active.  */
310struct cpp_reader
311{
312  /* Top of buffer stack.  */
313  cpp_buffer *buffer;
314
315  /* Overlaid buffer (can be different after processing #include).  */
316  cpp_buffer *overlaid_buffer;
317
318  /* Lexer state.  */
319  struct lexer_state state;
320
321  /* Source line tracking.  */
322  struct line_maps *line_table;
323
324  /* The line of the '#' of the current directive.  */
325  source_location directive_line;
326
327  /* Memory buffers.  */
328  _cpp_buff *a_buff;		/* Aligned permanent storage.  */
329  _cpp_buff *u_buff;		/* Unaligned permanent storage.  */
330  _cpp_buff *free_buffs;	/* Free buffer chain.  */
331
332  /* Context stack.  */
333  struct cpp_context base_context;
334  struct cpp_context *context;
335
336  /* If in_directive, the directive if known.  */
337  const struct directive *directive;
338
339  /* Token generated while handling a directive, if any. */
340  cpp_token directive_result;
341
342  /* Search paths for include files.  */
343  struct cpp_dir *quote_include;	/* "" */
344  struct cpp_dir *bracket_include;	/* <> */
345  struct cpp_dir no_search_path;	/* No path.  */
346
347  /* Chain of all hashed _cpp_file instances.  */
348  struct _cpp_file *all_files;
349
350  struct _cpp_file *main_file;
351
352  /* File and directory hash table.  */
353  struct htab *file_hash;
354  struct htab *dir_hash;
355  struct file_hash_entry *file_hash_entries;
356  unsigned int file_hash_entries_allocated, file_hash_entries_used;
357
358  /* Negative path lookup hash table.  */
359  struct htab *nonexistent_file_hash;
360  struct obstack nonexistent_file_ob;
361
362  /* Nonzero means don't look for #include "foo" the source-file
363     directory.  */
364  bool quote_ignores_source_dir;
365
366  /* Nonzero if any file has contained #pragma once or #import has
367     been used.  */
368  bool seen_once_only;
369
370  /* Multiple include optimization.  */
371  const cpp_hashnode *mi_cmacro;
372  const cpp_hashnode *mi_ind_cmacro;
373  bool mi_valid;
374
375  /* Lexing.  */
376  cpp_token *cur_token;
377  tokenrun base_run, *cur_run;
378  unsigned int lookaheads;
379
380  /* Nonzero prevents the lexer from re-using the token runs.  */
381  unsigned int keep_tokens;
382
383  /* Error counter for exit code.  */
384  unsigned int errors;
385
386  /* Buffer to hold macro definition string.  */
387  unsigned char *macro_buffer;
388  unsigned int macro_buffer_len;
389
390  /* Descriptor for converting from the source character set to the
391     execution character set.  */
392  struct cset_converter narrow_cset_desc;
393
394  /* Descriptor for converting from the source character set to the
395     wide execution character set.  */
396  struct cset_converter wide_cset_desc;
397
398  /* Date and time text.  Calculated together if either is requested.  */
399  const unsigned char *date;
400  const unsigned char *time;
401
402  /* EOF token, and a token forcing paste avoidance.  */
403  cpp_token avoid_paste;
404  cpp_token eof;
405
406  /* Opaque handle to the dependencies of mkdeps.c.  */
407  struct deps *deps;
408
409  /* Obstack holding all macro hash nodes.  This never shrinks.
410     See identifiers.c */
411  struct obstack hash_ob;
412
413  /* Obstack holding buffer and conditional structures.  This is a
414     real stack.  See directives.c.  */
415  struct obstack buffer_ob;
416
417  /* Pragma table - dynamic, because a library user can add to the
418     list of recognized pragmas.  */
419  struct pragma_entry *pragmas;
420
421  /* Call backs to cpplib client.  */
422  struct cpp_callbacks cb;
423
424  /* Identifier hash table.  */
425  struct ht *hash_table;
426
427  /* Expression parser stack.  */
428  struct op *op_stack, *op_limit;
429
430  /* User visible options.  */
431  struct cpp_options opts;
432
433  /* Special nodes - identifiers with predefined significance to the
434     preprocessor.  */
435  struct spec_nodes spec_nodes;
436
437  /* Whether cpplib owns the hashtable.  */
438  bool our_hashtable;
439
440  /* Traditional preprocessing output buffer (a logical line).  */
441  struct
442  {
443    unsigned char *base;
444    unsigned char *limit;
445    unsigned char *cur;
446    source_location first_line;
447  } out;
448
449  /* Used for buffer overlays by traditional.c.  */
450  const unsigned char *saved_cur, *saved_rlimit, *saved_line_base;
451
452  /* A saved list of the defined macros, for dependency checking
453     of precompiled headers.  */
454  struct cpp_savedstate *savedstate;
455
456  unsigned int nextcounter;
457};
458
459/* Character classes.  Based on the more primitive macros in safe-ctype.h.
460   If the definition of `numchar' looks odd to you, please look up the
461   definition of a pp-number in the C standard [section 6.4.8 of C99].
462
463   In the unlikely event that characters other than \r and \n enter
464   the set is_vspace, the macro handle_newline() in lex.c must be
465   updated.  */
466#define _dollar_ok(x)	((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
467
468#define is_idchar(x)	(ISIDNUM(x) || _dollar_ok(x))
469#define is_numchar(x)	ISIDNUM(x)
470#define is_idstart(x)	(ISIDST(x) || _dollar_ok(x))
471#define is_numstart(x)	ISDIGIT(x)
472#define is_hspace(x)	ISBLANK(x)
473#define is_vspace(x)	IS_VSPACE(x)
474#define is_nvspace(x)	IS_NVSPACE(x)
475#define is_space(x)	IS_SPACE_OR_NUL(x)
476
477/* This table is constant if it can be initialized at compile time,
478   which is the case if cpp was compiled with GCC >=2.7, or another
479   compiler that supports C99.  */
480#if HAVE_DESIGNATED_INITIALIZERS
481extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
482#else
483extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
484#endif
485
486/* Macros.  */
487
488static inline int cpp_in_system_header (cpp_reader *);
489static inline int
490cpp_in_system_header (cpp_reader *pfile)
491{
492  return pfile->buffer ? pfile->buffer->sysp : 0;
493}
494#define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic)
495#define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional)
496
497/* In errors.c  */
498extern int _cpp_begin_message (cpp_reader *, int,
499			       source_location, unsigned int);
500
501/* In macro.c */
502extern void _cpp_free_definition (cpp_hashnode *);
503extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *);
504extern void _cpp_pop_context (cpp_reader *);
505extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *,
506				    const unsigned char *, size_t);
507extern bool _cpp_save_parameter (cpp_reader *, cpp_macro *, cpp_hashnode *);
508extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *,
509			       unsigned int);
510extern const unsigned char *_cpp_builtin_macro_text (cpp_reader *,
511						     cpp_hashnode *);
512extern int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *);
513extern void _cpp_push_token_context (cpp_reader *, cpp_hashnode *,
514				     const cpp_token *, unsigned int);
515
516/* In identifiers.c */
517extern void _cpp_init_hashtable (cpp_reader *, hash_table *);
518extern void _cpp_destroy_hashtable (cpp_reader *);
519
520/* In files.c */
521typedef struct _cpp_file _cpp_file;
522extern _cpp_file *_cpp_find_file (cpp_reader *, const char *, cpp_dir *,
523				  bool, int);
524extern bool _cpp_find_failed (_cpp_file *);
525extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *);
526extern void _cpp_fake_include (cpp_reader *, const char *);
527extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool);
528extern bool _cpp_stack_include (cpp_reader *, const char *, int,
529				enum include_type);
530extern int _cpp_compare_file_date (cpp_reader *, const char *, int);
531extern void _cpp_report_missing_guards (cpp_reader *);
532extern void _cpp_init_files (cpp_reader *);
533extern void _cpp_cleanup_files (cpp_reader *);
534extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *);
535extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f);
536extern bool _cpp_read_file_entries (cpp_reader *, FILE *);
537extern struct stat *_cpp_get_file_stat (_cpp_file *);
538
539/* In expr.c */
540extern bool _cpp_parse_expr (cpp_reader *);
541extern struct op *_cpp_expand_op_stack (cpp_reader *);
542
543/* In lex.c */
544extern void _cpp_process_line_notes (cpp_reader *, int);
545extern void _cpp_clean_line (cpp_reader *);
546extern bool _cpp_get_fresh_line (cpp_reader *);
547extern bool _cpp_skip_block_comment (cpp_reader *);
548extern cpp_token *_cpp_temp_token (cpp_reader *);
549extern const cpp_token *_cpp_lex_token (cpp_reader *);
550extern cpp_token *_cpp_lex_direct (cpp_reader *);
551extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *);
552extern void _cpp_init_tokenrun (tokenrun *, unsigned int);
553
554/* In init.c.  */
555extern void _cpp_maybe_push_include_file (cpp_reader *);
556
557/* In directives.c */
558extern int _cpp_test_assertion (cpp_reader *, unsigned int *);
559extern int _cpp_handle_directive (cpp_reader *, int);
560extern void _cpp_define_builtin (cpp_reader *, const char *);
561extern char ** _cpp_save_pragma_names (cpp_reader *);
562extern void _cpp_restore_pragma_names (cpp_reader *, char **);
563extern void _cpp_do__Pragma (cpp_reader *);
564extern void _cpp_init_directives (cpp_reader *);
565extern void _cpp_init_internal_pragmas (cpp_reader *);
566extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *,
567				 unsigned int, unsigned int);
568extern void _cpp_pop_buffer (cpp_reader *);
569
570/* In traditional.c.  */
571extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *);
572extern bool _cpp_read_logical_line_trad (cpp_reader *);
573extern void _cpp_overlay_buffer (cpp_reader *pfile, const unsigned char *,
574				 size_t);
575extern void _cpp_remove_overlay (cpp_reader *);
576extern bool _cpp_create_trad_definition (cpp_reader *, cpp_macro *);
577extern bool _cpp_expansions_different_trad (const cpp_macro *,
578					    const cpp_macro *);
579extern unsigned char *_cpp_copy_replacement_text (const cpp_macro *,
580						  unsigned char *);
581extern size_t _cpp_replacement_text_len (const cpp_macro *);
582
583/* In charset.c.  */
584
585/* The normalization state at this point in the sequence.
586   It starts initialized to all zeros, and at the end
587   'level' is the normalization level of the sequence.  */
588
589struct normalize_state
590{
591  /* The previous character.  */
592  cppchar_t previous;
593  /* The combining class of the previous character.  */
594  unsigned char prev_class;
595  /* The lowest normalization level so far.  */
596  enum cpp_normalize_level level;
597};
598#define INITIAL_NORMALIZE_STATE { 0, 0, normalized_KC }
599#define NORMALIZE_STATE_RESULT(st) ((st)->level)
600
601/* We saw a character that matches ISIDNUM(), update a
602   normalize_state appropriately.  */
603#define NORMALIZE_STATE_UPDATE_IDNUM(st) \
604  ((st)->previous = 0, (st)->prev_class = 0)
605
606extern cppchar_t _cpp_valid_ucn (cpp_reader *, const unsigned char **,
607				 const unsigned char *, int,
608				 struct normalize_state *state);
609extern void _cpp_destroy_iconv (cpp_reader *);
610extern unsigned char *_cpp_convert_input (cpp_reader *, const char *,
611					  unsigned char *, size_t, size_t,
612					  off_t *);
613extern const char *_cpp_default_encoding (void);
614extern cpp_hashnode * _cpp_interpret_identifier (cpp_reader *pfile,
615						 const unsigned char *id,
616						 size_t len);
617
618/* Utility routines and macros.  */
619#define DSC(str) (const unsigned char *)str, sizeof str - 1
620
621/* These are inline functions instead of macros so we can get type
622   checking.  */
623static inline int ustrcmp (const unsigned char *, const unsigned char *);
624static inline int ustrncmp (const unsigned char *, const unsigned char *,
625			    size_t);
626static inline size_t ustrlen (const unsigned char *);
627static inline unsigned char *uxstrdup (const unsigned char *);
628static inline unsigned char *ustrchr (const unsigned char *, int);
629static inline int ufputs (const unsigned char *, FILE *);
630
631/* Use a const char for the second parameter since it is usually a literal.  */
632static inline int ustrcspn (const unsigned char *, const char *);
633
634static inline int
635ustrcmp (const unsigned char *s1, const unsigned char *s2)
636{
637  return strcmp ((const char *)s1, (const char *)s2);
638}
639
640static inline int
641ustrncmp (const unsigned char *s1, const unsigned char *s2, size_t n)
642{
643  return strncmp ((const char *)s1, (const char *)s2, n);
644}
645
646static inline int
647ustrcspn (const unsigned char *s1, const char *s2)
648{
649  return strcspn ((const char *)s1, s2);
650}
651
652static inline size_t
653ustrlen (const unsigned char *s1)
654{
655  return strlen ((const char *)s1);
656}
657
658static inline unsigned char *
659uxstrdup (const unsigned char *s1)
660{
661  return (unsigned char *) xstrdup ((const char *)s1);
662}
663
664static inline unsigned char *
665ustrchr (const unsigned char *s1, int c)
666{
667  return (unsigned char *) strchr ((const char *)s1, c);
668}
669
670static inline int
671ufputs (const unsigned char *s, FILE *f)
672{
673  return fputs ((const char *)s, f);
674}
675
676#endif /* ! LIBCPP_INTERNAL_H */
677